Question
Write a detailed note on the use of dimensional equation.

Answer

self

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A bullet of mass $10g$ moving horizontally at a speed of $5017m/s$ strikes a block of mass $490g$ kept on a frictionless track as shown in figure. The bullet remains inside the block and the system proceeds towards the semicircular track of radius $0.2m$. Where will the block strike the horizontal part after leaving the semicircular track ?
What is the difference between series and parallel combination of spring springs? Obtain an expression for the effective spring constant in each combination.
Consider the situation shown in figure. Suppose a small electric field E exists in the space in the vertically upward direction and the upper block carries a positive charge Q on its top surface. The friction coefficient between the two blocks is g but the floor is smooth. What maximum horizontal force F can be applied without disturbing the equilibrium?
[Hint: The force on a charge Q by the electric field E is F = QE in the direction of E.]
  1. Define friction.
  2. Show that kinetic friction is less than the static friction.
  3. Establish that static friction is a self-adjustable force.
  4. Write the basic laws of limiting friction.
Figure. shows a part of a circuit. If a current of 12mA exists in the $5\text{k}\Omega$ resistor, find the currents in the other three resistors. What is the potential difference between the points A and B?
Bullets are fired at regular intervals of 10 seconds from an armoured car. A is moving with a speed of 30m/s towards B. At what interval will an officer seated in car B and dashing with a speed of 60m/s towards A hear the report? Velocity of sound = 330m/s.
What is kinetic energy? Prove that kinetic energy of any object is $\frac{1}{2} m v^2$. Verify this using integration method also.
If the nucleons of a nucleus are separated from each other, the total mass is increased. Where does this mass come from?
Given Avogadro number $=6.02 \times 10^{23}$ and Boltzmann's constant $=1.38 \times 10^{-23}$ joule/ (molecule-K). Calculate (a) the average kinetic energy of translation of an oxygen molecule at $27^{\circ} \mathrm{C}$, (b) the total kinetic energy of an oxygen molecule at $27^{\circ} \mathrm{C}$ (c) the total kinetic energy in joules of a gram-molecule of oxygen at $27^{\circ} \mathrm{C}$.
A uniform wheel of radius R is set into rotation about its axis at an angular speed $\omega.$ This rotating wheel is now placed on a rough horizontal surface with its axis horizontal. Because of friction at the contact, the wheel accelerates forward and its rotation decelerates till the wheel starts pure rolling on the surface. Find the linear speed of the wheel after it starts pure rolling.